Worldwide Air Post stamps and postal history, Zeppelin Flight items, philatelic rarities of the World. Part 3
Lot 1172:
1927, Dr. Zamenhof, Creator of Esperanto, 14k bright green and brown, right sheet margin imperforated block of four with beautiful margins at three other sides, excellent quality, full OG, NH, VF and rare multiple, C.v. $5,500 as singles, Est. $4,000-$5,000, Sc. #374c
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